thrombosis

noun

throm·​bo·​sis thräm-ˈbō-səs How to pronounce thrombosis (audio)
thrəm-
plural thromboses thräm-ˈbō-ˌsēz How to pronounce thrombosis (audio)
thrəm-
: the formation or presence of a blood clot within a blood vessel
thrombotic
thräm-ˈbä-tik How to pronounce thrombosis (audio)
thrəm-
adjective

Examples of thrombosis in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Key Takeaways Sitting still for long periods on a flight can slow blood flow in your legs and increase the risk of deep vein thrombosis (DVT). — Kathleen Ferraro, Verywell Health, 5 Aug. 2026 The 22-year-old French phenom was diagnosed with deep vein thrombosis in his right shoulder. — Anna Lazarus Caplan, PEOPLE, 4 Aug. 2026 These simple precautions can reduce the risk of discomfort and even more serious conditions like deep vein thrombosis on extended flights. — Iona Brannon, Travel + Leisure, 23 July 2026 They can be used to treat conditions such as deep vein thrombosis (DVT), varicose veins, spider veins, swelling or discomfort from prolonged sitting or standing. — Bestreviews, Mercury News, 9 July 2026 See All Example Sentences for thrombosis

Word History

Etymology

New Latin, from Greek thrombōsis clotting, from thrombousthai to become clotted, from thrombos clot

First Known Use

1857, in the meaning defined above

Time Traveler
The first known use of thrombosis was in 1857

Phrases Containing thrombosis

Rhymes for thrombosis

See All Rhymes for thrombosis

Browse Nearby Words

thromboplastin
thrombosis
thromboxane
See all Nearby Words

Cite this Entry

“Thrombosis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/thrombosis. Accessed 12 Aug. 2026.

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Kids Definition

thrombosis

noun
throm·​bo·​sis thräm-ˈbō-səs How to pronounce thrombosis (audio)
plural thromboses -ˈbō-ˌsēz How to pronounce thrombosis (audio)
: the formation or presence of a blood clot within a blood vessel

Medical Definition

thrombosis

noun
throm·​bo·​sis thräm-ˈbō-səs, thrəm- How to pronounce thrombosis (audio)
plural thromboses -ˌsēz How to pronounce thrombosis (audio)
: the formation or presence of a blood clot within a blood vessel see coronary thrombosis, deep vein thrombosis

More from Merriam-Webster on thrombosis

Britannica.com: Encyclopedia article about thrombosis

Last Updated: - Updated example sentences
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